Paul Roderick Gregory
, ContributorI cover domestic and world economics from a free-market perspective.Opinions expressed by Forbes Contributors are their own.

Warren Buffett’s secretary, Debbie Bosanek, served as a stage prop for President Obama’s State of the Union speech. She was the president’s chief display of the alleged unfairness of our tax system – a little person paying a higher tax rate than her billionaire boss.

Bosanek's prominent role in Obama’s “fairness” campaign piqued my curiosity, and I imagine the curiosity of others. How much does her boss pay this downtrodden woman? So far, no one has volunteered this information.

We can get an approximate answer by consulting IRS data on tax rates by adjusted gross income, which would approximate her salary, assuming she does not have significant dividend, interest or capital-gains income (like her boss). I assume Buffett keeps her too busy for her to hold a second job. I also do not know if she is married and filing jointly. If so, it is deceptive for Obama to use her as an example. The higher rate may be due to her husband’s income. So I assume the tax rate referred to is from her own earnings.

Insofar as Buffett (like Mitt Romney) earns income primarily from capital gains, which are taxed at 15 percent (and according to Obama need to be raised for reasons of fairness), we need to determine how much income a taxpayer like Bosanek must earn in order to pay her tax rate. This is easy to do within ranges.

Buffet himself declares that he pays a 17.4 percent rate on taxable income. His staff, like Bosanek, pay an average of 34 percent. The IRS publishes detailed tax tables by income level. The 2009 results show that the average taxpayer paying Buffet's 17.4 rate earns an adjusted gross income between $100,000 and $200,000. But an average taxpayer in Bosaneck's rate (after downward adjustment for payroll taxes) earns an adjusted gross income of $200,000 to $500,000. Therefore Buffett must pay Debbie Bosanke a salary well above two hundred thousand.

We must wait for further details to learn how much more than $200,000 she earns. The tax tables tell us about average ranges. For all we know she earns closer to a half million each year, but that is pure speculation.

I have nothing against Debbie Bosanke earning a half million or even more. Buffett is a major player in the world economy. His secretary deserves good compensation. At her income, however, she is scarcely the symbol of injustice that Obama wishes her to project.

I imagine that there are any number of secretaries who would want her job and her place in the Congress gallery for the President’s State of the Union address.